Isethionic Acid
Title: Isethionic Acid
CAS Registry Number: 107-36-8
CAS Name: 2-Hydroxyethanesulfonic acid
Additional Names: hydroxyethylsulfonic acid
Molecular Formula: C2H6O4S
Molecular Weight: 126.13
Percent Composition: C 19.04%, H 4.79%, O 50.74%, S 25.42%
Line Formula: HOCH2CH2SO3H
Literature References: Obtained by heating ethylene, chlorosulfonic acid, and water: Klason, J. Prakt. Chem. [2] 19, 234 (1879); from ether and SO3: Hubner, Ann. 223, 198 (1884); from ethylenesulfite + NaHCO3: Smith, US 2899461 (1959 to Dow).
Properties: Colorless, syrupy, strongly acid liquid. Kept over H2SO4, it solidifies to a very hygroscopic, cryst mass. Miscible with water, alc. Forms readily cryst salts with organic bases.
CAUTION: Irritating to skin, mucous membranes.

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